title: Improved performance of organic light-emitting diodes with MoO3 interlayer by oblique angle deposition.
abstract: We fabricated and demonstrated improved organic light emitting diodes (OLEDs) in a thin film architecture of indium tin oxide (ITO)/ molybdenum trioxide (MoO3) (20 nm)/N,N'-Di(naphth-2-yl)-N,N'-diphenyl-benzidine (NPB) (50 nm)/ tris-(8-hydroxyquinoline) (Alq3) (70 nm)/Mg:Ag (200 nm) using an oblique angle deposition technique by which MoO3 was deposited at oblique angles (θ) with respect to the surface normal. It was found that, without sacrificing the power efficiency of the device, the device current efficiency and external quantum efficiency were significantly enhanced at an oblique deposition angle of θ=60° for MoO3.
authors.affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore.
authors.forename: S W
authors.initials: SW
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Divayana
authors.forename: X W
authors.initials: XW
authors.lastname: Sun
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.forename: K S
authors.initials: KS
authors.lastname: Leck
authors.forename: H V
authors.initials: HV
authors.lastname: Demir
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D008422:Materials Testing; D008982:Molybdenum / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012666:Semiconductors; D013499:Surface Properties
chemical_list: D009930:Organic Chemicals; D010087:Oxides; C082290:molybdenum trioxide; D008982:Molybdenum